Adjustable resuscitation device and method for using the same
Inventors
Islava, Steve • Cazort, III, John Guy • Van Auken, Richard A.
Assignees
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Publication Number
US-11219738-B2
Publication Date
2022-01-11
Expiration Date
Abstract
A device and method for adjusting a tidal breath delivered to a patient. The device includes a moving frame which is configured to move over a stationary frame that is nested within the moving frame itself. Disposed between the moving frame and the stationary frame is a compressible bellows which delivers a tidal breath to the patient each time the moving frame is passed over the stationary frame. The specific volume of the tidal breath that is delivered may adjusted according to the estimated weight of the patient, thereby preventing over inflation of the patient's lungs while undergoing treatment. To adjust the tidal breath volume, the user quickly changes the relative position of a slide selector which dictates the range of possible movement for the bellows to be compressed, thereby limiting the volume of air/oxygen which may be delivered by the bellows.
Core Innovation
The invention relates to an adjustable emergency resuscitation device for selecting and delivering a tidal volume to a patient using a stationary frame and a moving frame that at least partially encloses the stationary frame. A bellows comprising two opposing ends couples a first opposing end to the stationary frame and couples a second opposing end to the moving frame. An oxygen valve is coupled to the second opposing end of the bellows, and a patient valve is coupled to the stationary frame.
A slide selector is disposed between the moving frame and the stationary frame to select a setting, and the stationary frame comprises a stop configured to interact with a flat edge disposed on the slide adjuster. The slide selector is actuated within a cavity defined within the moving frame. Embodiments include tooth engagement, marker and measurement markings, thumb tab or thumb depress features, and stop and flat-edge engagement to limit bellows compression stroke.
Oxygen delivery occurs from the bellows via the oxygen valve toward the patient valve, and the compressible bellows is actuated by moving the moving frame proximally and distally relative to the stationary frame. Proximal compression delivers a volume of oxygen to the patient, and distal movement returns the frame to refill the bellows with a new volume of oxygen for repeated tidal breaths. Variations include a measurement table with weight and age categories and an alternate cylindrical housing device with an adjustable diaphragm, internal volume, and labeled volume and weight markings.
Claims Coverage
The independent claims cover a tidal-volume selecting device with a specific frame-and-bellows architecture and a slide selector having a stop and flat-edge interaction, and a method that includes estimating patient weight and actuating the slide selector to set moving-frame positions for oxygen delivery and bellows refilling. Across the independent claims, the core inventive structure comprises five main mechanical and functional elements.
Stationary and moving frames with bellows coupling
A stationary frame and a moving frame which at least partially encloses the stationary frame, where a bellows comprising two opposing ends has a first opposing end coupled to the stationary frame and a second opposing end coupled to the moving frame.
Oxygen and patient valves integrated with bellows and stationary frame
An oxygen valve coupled to the second opposing end of the bellows and a patient valve coupled to the stationary frame.
Slide selector with stop interacting with a flat edge
A slide selector disposed between the moving frame and the stationary frame, wherein the stationary frame comprises a stop configured to interact with a flat edge disposed on the slide adjuster.
Estimate patient weight to set slide selector
Estimating a weight of the patient and actuating a slide selector disposed between a moving frame and a stationary frame of the device.
Proximal compression and distal refill cycle
Disposing the moving frame at a first position relative to a stationary frame as dictated by the position of the slide selector; moving the moving frame in a proximal direction toward the patient to a second position relative to the stationary frame; delivering a volume of oxygen to the patient from a bellows coupled between the moving frame and the stationary frame; moving the moving frame in a distal direction away from the patient back to the first position relative to the stationary frame; and refilling the bellows with a new volume of oxygen.
Slide selector actuation within a moving-frame cavity
Actuating the slide selector disposed between the moving frame and the stationary frame of the device comprises pushing or pulling the slide selector within a cavity defined within the moving frame.
Overall, the independent claim coverage emphasizes a bellows-based resuscitation architecture with oxygen valve and patient valve, a mechanically constrained slide selector that cooperates with a stationary stop and flat-edge interface, and a method that uses patient weight estimation and proximal and distal frame motion to deliver oxygen and refill the bellows via the selected slide-selector setting.
Stated Advantages
Prevents over-inflation by stopping bellows intake when the thumb tab or flat edge contacts a stationary stop.
Documented Applications
Emergency resuscitation, including selecting and delivering patient-specific tidal volumes and repeated tidal breaths using an adjustable resuscitation device.
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